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Forum Discussion
CM2050V unstable after Comcast updated firmware
I have the same issue with two CM2050V modems at two locations (one in Massachusetts and another in California). I have Xfinity triple-play service (Gigabit Internet option). After the modems have be...
ATB wrote:OK. Thanks. I used the "Agent Chat" and simply requested to reprovision the modem, stating your recommendation. They recommissioned both modems.
Is there some diagnostics that I can run to make sure that this solves the issues I had?
Just run them over time and see if the problems reoccur. If they do reoccur, there are a couple of Comcast direct forums where you can post and ask for assistance from Comcast employees. On either forum, the employees are responsive and technically very competent.
https://www.dslreports.com/forum/comcastdirect
https://www.reddit.com/r/Comcast_Xfinity/
Thanks. In addition to re-provisioning the modems, I addressed the relatively high downstream power levels for one of the two modems (some were above 10 dBmV). All lines are connected to an amplified splitter in our condo building. I connected my line to the VoIP line, and the downstream power levels are now within the good range (about 5 dBmV). So far, no problems anymore.
The problem (modem trying to reconnect over and over again) happened again this morning shortly after the automatic switch to daylight standard time. Could this be yet another glitch in the new firmware? Attached is the log file after I power cycled the modem.
Any Criticals, Errors or Warnings seen in the event logs has to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
ATB wrote:The problem (modem trying to reconnect over and over again) happened again this morning shortly after the automatic switch to daylight standard time. Could this be yet another glitch in the new firmware? Attached is the log file after I power cycled the modem.
The Comcast servers stay on standard time year around, they do not adjust for daylight saving time. No issues here with the time change.
Based on the attached status, it appears your power levels are very near the high limit. The Netgear specification for power levels runs from -7 dBmV to +7 dBmV. For reference, check out the second sentence at the top of this knowledge base article here:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
Have you considered trying one of these for test purposes?
3db Coax Cable Attenuator Pad (1 Each) https://a.co/d/hyGhBWn
The new firmware was also pushed yesterday to my two CM2050V modems in two different locations (Massachusetts and California). So far, no issues.
Glad you got it working. Please mark your thread as solved so others will know.
Enjoy. 📡
Mind sharing the firmware version pushed to your two modems?
Correct, the firmware they recently pushed to both modems is V2.0.1.03. So, it looks like they reverted to the previous firmware.
My speed seems to be up now for a week...how do you know if they fixed /updated the software?
